Tire-building core wheel



Dec. 28 1926;

J. E. KELLEY ET AL TIRE BUILDING CORE WHL 31.

Filed Feb. 7. 19 25 2 Sheets-Sheet 1 Dec. 28 1926. 1,612,731

- J. E. KELLEY ET AL Patented Dec. 28, 1926.

STATES JAIVIES E. KELLEY AND PEARL J. WILLIAL'ES, OE SPRINGFIELD, OHEO.

TIRE-BUILDiNG CORE JHEEL.

Application filed February 7, 1925.

Our invention relates to improvements in tire building core-wheels in which the core is constructed of removable sections; it more particularly relating to the arrangement by which the core sections may be removed from the completed tire.

An object of our invention is to provide a tire building core-wheel of simple and effective construction by which the core may be readily removed from the completed tire.

A further Object of the invention is to pro-- vide an arrangement by which the cross sections or segments may be readily and accurately adjusted with respect to each other and also with relation to the hub of th wheel.

A. ii'urther object of the invention is to provide a core-wheel of the character dcscribed, the spokes of which are of a collapsible or folding character so that when the core section is withdrawn from the completed tire the spoke corresponding to that section will be collapsed by folding but at the same time be kept permanently connected with both the hub and the core section.

In the accompanying drawings:

Fig. 1 is a plan view of a tire building device embodying the improvements.

Fig. 2 is a side elevation partly in section ot the same showing one of the spokes in rigid position.

Fig. 3 is a plan view partly in section of a portion of the same.

Fig. 4 is a detail sectional view of Fig. 3 showing in dotted lines the positions assumed by the spoke in withdrawing the core section.

Referring to the drawings, 1 represents the hub of the wheel which is mounted to rotate on a spindle 2 which is supported by a goose neck 3. Attached to the hub is a series of radial spokes each of which is attached at its outer end to a section of the core, these sections being represented by the reference characters 7 and 8. Each spoke is formed of two members pivotally connected together at their centers by pins 13. Qne member of each spoke is connected with the hub by a threaded stud 6 while the other member is connected with its corresponding core section by a threaded stud 9'. These studs are oppositely threaded so as to give the spoke the properties of a turn buckle whereby by rotating the spoke the core sec- Serial No. 7,701.

tion may be accurately adjusted with relation to adjacent core sections and also with relation to the hub. The s uds (3 and 7 are connected with their corresponding spoke members by pivot pins l t; each stud being provided with a square head which receives its corresponding pin and is embraced on one side by an extension projecting from the companion spoke member so that when the two members of the spoke are locked together by the locking pin 15 rotation about the pins 14 Will be prevented. The locking pin 15 is carried by one of the spoke members with its inner end adapted to engage in a recess in the companion spoke member and normally impelled to locking position by a coil spring as shown.

Each of the core segments has its ends provided with tenons which are received by corresponding slots in the adjacent core segmentsS as indicated at 1.0 in Fig. 2 and there 1s preterably provided a lock 11 between adjacent core sections for locking the segments in position. The sections 7 are the key sections of the core and the ends of each of :2

these key sections are in parallel relation.

The operation of removing the core from the complete tire is as follows: The corewheel is placed in a horizontal position.

lVith tires of small or n'iedium size the locks i".

11 are released between all of the segments, excepting preferably three adjacent sections such, for instance as the ones at the right hand of Fig. 1. Any suitable withdrawing device is then connected to the eyes 12 of one of the key sections 7 and the spoke member corresponding to that section disconnected by withdrawing the locking pin 1.5. That section 7 is then pulled inwardly out of the tire, the members of the spoke of that section completing or folding to a position shown in dotted lines at the leftof Fig. at in which it will be seen that the free ends of each spoke member swings to one side of the plane of the spoke when in rigid position as the ends which carry the studs approach each other, and as soon as the segment 7 clears the two adjacent okes it falls from I c I kl) u y the withdrawing device. The withdra ing device may then be connected with one of tions at the left hand side of the core shown in Fig. 1, the tire building forced from the remainder of the core sections which are preferably l-lept rigid and locked.

It has been stated that three of the sections are preferably maintained in rigid position and the the forced therefrom after the other sections have been withdraw In the larger sized tires how ver, it is ii'ound desirable to withdraw all or the sections by the withdrawing device in the manner described.

Having thus described our invention, we claim:

1. In a tire ouilding device, the CO1'l'1l l}1;-. tion of a hub, a series o? core sections to form an annular co e when assembled, a plurality at least of said sections being inov- -ble relatively to said hub, a series of radial spokes for connecting sax: core sections and hub, the spoke for each of said movable core sections being constructed to fold upon the Withdrawal of its corr spending 5 CtlOfl,S8 l'Ll spoke when folded projecting laterally With relation to the plane of the unfolded spolzes, together with means for holding said spoke in rigid position.

2. In a tire building device, the combination of a hub, a series of core sections to form an annular core when assembled, a plurality at least of each of said sections being movable relatively to said hub, a series o1 redial spokes for connecting said core sections and hub, the spoke each e movable core sections being torn red of two members pivoted together and connected spectivel to the hub and corresponding core section to permit said spoke to fold when the core section is Withdrawn, said spoke when folded projecting laterally with relation to the plane of the unfolded spoke; and means tor rigidly and detachably connecting said members together.

8. In a tire building device, the combination or a hub, a series of core sections to form an annular core when assembled, a plurality at least of which are movable relatively to hub, a series radial spokes for connecting said core sectionsand hub, the spolze for each ()i said movable sections be ng h'n-n'ied of two members pivoted together, means for pivotuily connecting the members of said sgu i apectively with said hub and the coriwooiuling core section, the pivotal connection between the men'ibers of said spoke being at right angh-is to the axis of the hub so that said spoke will told laterally with relation to the plane gether, and a stud pivotally connected with each oi said spoke members at opposite ends ot the spoke, said studs having threaded connections respectively with the hub and correspondin hub section, means for securing said spol: .en'ibers together, and means for holding; said stuns rigid with said spoke members when the spoke EUQUlbQIS are locked together.

5. in a ti e building device, the combination et a hub. a series of core sections to form annular core when assembled, it plurality at lo: it of v? h are movable releti cl; to said nub, 5 rise of radial spokes for connect said core sections and hub, the spoke for each of said movable sections being; formed oi two members pivoted together, a stud pivotallv connected with each of said sp he nlen'ibers at opposite ends 01 nd means for detachably loci;-

e in fibers togetl icr, each of members having an extension the stud on the opposite l')l ii)81 cooperating with said extension to holdsam studs rigid with the spoke when said spoke members are locked together.

ii. in a tire building device, the combiuzn tion of a hub, a series 0t core sections to form annul core when :ZSSOHllllQil, a plurali which are movable relatively Lil said nub. a 5: lies of 'foldable spokes extending radially iron. the hub for connectsaid core sec-ions and hub together, with means for locking said spokes in rigir position, each oi s d inolres being toldable in a direction latc to fine plane of the unfolded soolres, a threaded stud at each end oi each spoke adapted to be thread 'Wpcciivev in 'll(l hub and the correcciion, one of said studs bepi'ovu with right hand threads and the other \Vl'tll left hand threads to permit the core sections to he adjus-ited relativel to adjacent core sections by turning the spoke. 

